Quadral SUBWOOFER - Manual (Page 5)

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Starting up
Having correctly connected up your subwoofer as described in the above, first switch on your
amplifier. Now switch on your subwoofer by means of the mains switch on the rear panel.
The indicator must then light up. When it does so, this means that your subwoofer is now
ready for operation.
When the unit has been switched on you can now adjust the subwoofer to achieve the ideal
balance. This will only be necessary once unless you purchase new speakers. In this case you
will have to balance the subwoofer again with the new speakers.
Now put your system into operation with a music signal. First set the Frequency control to
centre (neutral) position. Now slowly turn the Volume control clockwise until a tonal balance
is established in the bass range between the subwoofer and your satellites. You can use the
Frequency control to adjust the crossover range.
The general rules here are:
large loudspeakers, turn the control further anticlockwise
and
small loudspeakers, turn the control further clockwise.
Having adjusted the Frequency control it might be necessary to readjust the Volume control
to achieve an ideal tonal balance again. The superimposition of your satellites’ sound waves
and those of the subwoofer can lead to interference at your listening position. At worst, this
means that the bass sound you hear there will be no more than “subdued“ despite correct
setting of Frequency and Volume controls. If this is the case, please turn the Phase control on
the rear panel to the 0° or 180° position (not possible with the SUB 45).
At a point of the Phase control you will notice the bass sound becoming more powerful and
punchy. By experimenting and listening you will thus find the ideal setting to suit your require-
ments.
Please note: Always bear in mind that the setting of the subwoofer should be carried out to
suit your listening position. That means that when adjusting a control you should always return
to your listening position to hear whether your adjustment has a positive effect there.
5. Subwoofer electronic
(Differences of models cause a different position of the operating elements.)
If your DOLBY or DTS amplifier is fitted with an LFE output, some subwoofers offer a sym-
metrical (balanced) and also an unsymmetrical input (cinch/RCA).
ENGLISH
Connection variant no. 4 (some models)
(Subwoofer in a Dolby / DTS unit)
If your surround amp or receiver has a LFE output (Low Frequency Enhancement), you can
connect it with the LFE socket on the subwoofer.
This connection can take place over the cinch (RCA) connection or over the XLR connection.
Please observe the following cable routing when using an XLR cable.
LFE-Out
SURROUND-VERSTÄRKER
Surround-Amplifier
Surround-Amplifier